S3 jpg uploads fine. PNG uploads to local?

Hi guys,

Finally got Discourse installed on my test server. S3 is et up and working for files.

Weird problem:
jpg, zip, jpeg extensions are working and sending to S3 but NOT png!? PNG still tries and fails to upload to the normal ‘uploads’ folder on the local server.

Anyone can shed some light on this? Link created is also to uploads filder so i know it’s not an S3 access denied issue.

I have added * to “authorized extensions” in files list

Edit: Add~ Branding logo suffers from the same fate, so not only posts